﻿78 
  Scientific 
  Intelligence. 
  

  

  to 
  be 
  $632,309,565, 
  "the 
  greatest 
  in 
  the 
  history 
  of 
  the 
  country. 
  

   A 
  noticeable 
  feature 
  of 
  this 
  remarkable 
  total 
  is 
  the 
  increase 
  in 
  

   the 
  value 
  of 
  almost 
  all 
  the 
  important 
  metallic 
  products, 
  especially 
  

   that 
  of 
  pig 
  iron, 
  gold, 
  copper, 
  lead, 
  and 
  zinc, 
  each 
  of 
  the 
  three 
  

   latter 
  metals 
  reaching 
  their 
  greatest 
  production. 
  Proportionately 
  

   aluminum 
  made 
  the 
  largest 
  increase, 
  its 
  product 
  being 
  over 
  three 
  

   times 
  that 
  of 
  1896 
  and 
  many 
  times 
  greater 
  than 
  in 
  any 
  year 
  

   prior 
  to 
  1895." 
  w. 
  

  

  3. 
  Pre- 
  Cambrian 
  lossiliferous 
  Formations 
  ; 
  by 
  Charles 
  D. 
  

   Walcott, 
  Bull. 
  Geol. 
  Soc. 
  America, 
  Vol. 
  10, 
  pp. 
  199-244, 
  pis. 
  

   22-28, 
  1899. 
  — 
  Mr. 
  Walcott 
  has 
  brought 
  together 
  in 
  this 
  valuable 
  

   contribution 
  more 
  information 
  than 
  most 
  geologists 
  would 
  sup- 
  

   pose 
  to 
  be 
  in 
  existence 
  regarding 
  clastic 
  formations, 
  clearly 
  pre- 
  

   Cambrian 
  in 
  position, 
  and 
  yet 
  as 
  clearly 
  of 
  sedimentary 
  origin, 
  

   and 
  probably 
  fossil-bearing, 
  situated 
  in 
  various 
  regions 
  on 
  the 
  

   North 
  American 
  continent. 
  The 
  discussion 
  of 
  the 
  section 
  of 
  the 
  

   Belt 
  terrane 
  in 
  Montana 
  is 
  the 
  result 
  of 
  special 
  investigations 
  of 
  

   the 
  author 
  during 
  a 
  recent 
  trip 
  in 
  that 
  region. 
  The 
  author 
  has 
  

   gathered 
  the 
  facts 
  from 
  reports 
  already 
  made 
  by 
  others, 
  bearing 
  

   on 
  this 
  subject, 
  and 
  in 
  discussing 
  the 
  evidence 
  of 
  fossils 
  in 
  strata 
  

   determined 
  to 
  be 
  of 
  pre-Cambrian 
  age, 
  makes 
  reference 
  to 
  foreign 
  

   as 
  well 
  as 
  American 
  evidence. 
  The 
  principal 
  evidences 
  brought 
  

   forward 
  are 
  the 
  following 
  : 
  Of 
  problematic 
  character 
  is 
  Eozoon, 
  

   whose 
  organic 
  origin 
  is 
  as 
  yet 
  unproven. 
  The 
  same 
  appears 
  to 
  

   be 
  true 
  of 
  supposed 
  fossil 
  sponges, 
  described 
  by 
  Matthew, 
  from 
  

   Laurentian 
  rocks 
  of 
  New 
  Brunswick, 
  and 
  of 
  radiolarians 
  and 
  

   sponges 
  of 
  Brittany. 
  

  

  Graphite 
  has 
  frequently 
  been 
  cited 
  as 
  proof 
  of 
  the 
  existence 
  of 
  

   fucoids, 
  and 
  the 
  finest 
  example 
  of 
  bedded 
  graphite 
  in 
  Algonkian 
  

   rocks 
  referred 
  to 
  is 
  at 
  the 
  mines 
  of 
  Hague, 
  on 
  Lake 
  George, 
  New 
  

   York, 
  where 
  graphite 
  occurs, 
  presenting 
  the 
  appearance 
  of 
  fossil 
  

   coal 
  beds, 
  and 
  alternating 
  with 
  sandstones. 
  The 
  graphite 
  shale 
  

   exists, 
  varying 
  from 
  3-13 
  feet 
  in 
  thickness. 
  

  

  The 
  supposed 
  organic 
  origin 
  of 
  Paleotrochis 
  is 
  shown 
  to 
  be 
  

   erroneous 
  by 
  recent 
  investigations 
  of 
  Mr. 
  Diller, 
  as 
  reported 
  in 
  

   this 
  Journal 
  (May,. 
  1899, 
  p. 
  337). 
  

  

  Again, 
  the 
  evidence 
  brought 
  forward 
  by 
  Mr. 
  Gresley, 
  of 
  sup- 
  

   posed 
  organic 
  remains 
  in 
  the 
  iron-bearing 
  rocks 
  of 
  the 
  Menominee 
  

   range, 
  Michigan, 
  and 
  described 
  as 
  actual 
  evidence 
  of 
  life, 
  and 
  

   other 
  evidence 
  of 
  similar 
  kind 
  in 
  these 
  Upper 
  Iluronian 
  rocks, 
  

   have 
  been 
  shown 
  to 
  be 
  of 
  doubtful 
  value 
  upon 
  minute 
  examination. 
  

  

  The 
  Aspidella 
  of 
  the 
  Avalon 
  terrane 
  of 
  Newfoundland 
  is 
  

   reported 
  by 
  the 
  author 
  as, 
  probably, 
  of 
  organic 
  origin. 
  

  

  The 
  Etcheminian 
  fossils, 
  reported 
  by 
  Matthew, 
  are 
  referred 
  to, 
  

   without 
  giving 
  judgment 
  in 
  the 
  matter, 
  awaiting 
  the 
  fuller 
  report 
  

   of 
  the 
  fauna, 
  which 
  is 
  expected 
  soon. 
  Mr. 
  Matthew 
  thinks 
  the 
  

   fauna 
  contains 
  20 
  species. 
  

  

  In 
  the 
  Ohuar 
  terrane 
  of 
  the 
  Arizona 
  Grand 
  Canyon 
  series, 
  of 
  

   established 
  pre-Cambrian 
  age, 
  forms 
  of 
  unquestioned 
  organic 
  origin 
  

   have 
  been 
  obtained. 
  The 
  one, 
  Cryptozoon 
  occldentale, 
  is 
  de- 
  

  

  